Geochemistry of late Mesozoic lamprophyre dykes from the Taihang Mountains, north China, and implications for the sub-continental lithospheric mantle

doi:10.1017/S0016756802007124

	Geochemistry of late Mesozoic lamprophyre dykes from the Taihang Mountains, north China, and implications for the sub-continental lithospheric mantle
	Chen, B ; Zhai, M
刊名	GEOLOGICAL MAGAZINE
	2003
卷号	140 期号:1 页码:87-93
关键词	geochemistry lamprophyres lithosphere Mesozoic northern China
ISSN号	0016-7568
DOI	10.1017/S0016756802007124
文献子类	Article
英文摘要	Many late Mesozoic lamprophyre dykes occur in the Taihang Mountains (north China). These lamprophyres are rich in large ion lithophile elements (e.g. Rb, Sr, Ba and K) and light REE, and have highly differentiated REE patterns. They show large but regular variations in chemical and Nd-Sr isotopic compositions. All these suggest that the lamprophyres were produced from differentiation of a parental magma, coupled with contamination by lower crust. The parental magma was derived from melting of a long-term enriched sub-continental lithospheric mantle source as is indicated by the highly enriched isotopic signatures of the lamprophyres. Mantle enrichment in the area was probably produced by interaction of volatile-rich melts released from the asthenosphere with the above lithosphere in middle Proterozoic times.
WOS关键词	VOLCANIC-ROCKS ; EASTERN CHINA ; SR ; CRATON ; PB ; ND ; GEODYNAMICS ; EVOLUTION ; XENOLITHS ; ISOTOPES
WOS研究方向	Geology
语种	英语
出版者	CAMBRIDGE UNIV PRESS
WOS记录号	WOS:000182484400008
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/78827]
专题	中国科学院地质与地球物理研究所
通讯作者	Chen, B
作者单位	1.Peking Univ, Dept Geol, Beijing 100871, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China
推荐引用方式 GB/T 7714	Chen, B,Zhai, M. Geochemistry of late Mesozoic lamprophyre dykes from the Taihang Mountains, north China, and implications for the sub-continental lithospheric mantle[J]. GEOLOGICAL MAGAZINE,2003,140(1):87-93.
APA	Chen, B,&Zhai, M.(2003).Geochemistry of late Mesozoic lamprophyre dykes from the Taihang Mountains, north China, and implications for the sub-continental lithospheric mantle.GEOLOGICAL MAGAZINE,140(1),87-93.
MLA	Chen, B,et al."Geochemistry of late Mesozoic lamprophyre dykes from the Taihang Mountains, north China, and implications for the sub-continental lithospheric mantle".GEOLOGICAL MAGAZINE 140.1(2003):87-93.